Modbus Master Command Buffer Overrun

What does I xx .Command yy .BufferOverrun mean?

This boolean tag indicates that a buffer overrun occurred during data reception for a specific Modbus master command (Command yy). A value of 1 (Occurrence) means the module's receive buffer overflowed because data arrived faster than it could be processed. This condition can lead to data loss and unreliable command responses.

• Communication speed (baud rate) is too high for the module's processing capability for incoming data
• Modbus slave device sending excessive or unsolicited data
• Module resource limitations or temporary heavy load preventing timely buffer processing

Click steps to track your progress.

1. 1

   Reduce the baud rate setting in the module's configuration if the slave device is sending large amounts of data.

2. 2

   Ensure the module's firmware is up-to-date to optimize data processing and buffer handling.

3. 3

   Verify the Modbus slave device is not sending unsolicited or excessively large data packets for Command yy.